Hi Jon
that is almost certainly a topology correction problem. Check to see if the wm.mgz contains any spurious connections that cause the space that is missing in the ?h.white surface to be closed in a slice. If you upload the data we can show you how to correct it if you want.
cheers Bruce On Fri, 25 Apr 2014, Jonathan Holt wrote:
Hi all, I would love information on how best to tackle and alleviate this type of surface issue. Images attached.